How to use the plugin
1. Install Boot NTR on your 3DS, follow this post
2. Download the zip and extract the ‘00040000001A0400’ folder to a ‘plugin’ folder on your SD card.
3. Reboot your NEW3DS and make sure the Boot NTR works.
4. Launch BootNTR selector, and select BootNTR version 3.3 or version 3.4
5. It will auto exit, and then you launch Super Mario Maker immediately
6. Click the game icon of Super Mario Maker, there should be a green screen flashed which means you can use the cheat.